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1.1 root 1: .\" Copyright (c) 1983 The Regents of the University of California.
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18: .\" @(#)kgmon.8 6.3 (Berkeley) 6/24/90
19: .\"
20: .TH KGMON 8 "June 24, 1990"
21: .UC 5
22: .SH NAME
23: kgmon \- generate a dump of the operating system's profile buffers
24: .SH SYNOPSIS
25: .B kgmon
26: [
27: .B \-b
28: ] [
29: .B \-h
30: ] [
31: .B \-r
32: ] [
33: .B \-p
34: ] [ system ] [ memory ]
35: .SH DESCRIPTION
36: .I Kgmon
37: is a tool used when profiling the operating system.
38: When no arguments are supplied,
39: .I kgmon
40: indicates the state of operating system profiling as running,
41: off, or not configured.
42: (see
43: .IR config (8))
44: If the
45: .B \-p
46: flag is specified,
47: .I kgmon
48: extracts profile data from the operating system and produces a
49: .I gmon.out
50: file suitable for later analysis by
51: .IR gprof (1).
52: .PP
53: The following options may be specified:
54: .TP
55: .B \-b
56: Resume the collection of profile data.
57: .TP
58: .B \-h
59: Stop the collection of profile data.
60: .TP
61: .B \-p
62: Dump the contents of the profile buffers into a
63: .I gmon.out
64: file.
65: .TP
66: .B \-r
67: Reset all the profile buffers.
68: If the
69: .B \-p
70: flag is also specified, the
71: .I gmon.out
72: file is generated before the buffers are reset.
73: .PP
74: If neither
75: .B \-b
76: nor
77: .B \-h
78: is specified, the state of profiling collection remains unchanged.
79: For example, if the
80: .B \-p
81: flag is specified and profile data is being collected,
82: profiling will be momentarily suspended,
83: the operating system profile buffers will be dumped,
84: and profiling will be immediately resumed.
85: .SH FILES
86: /vmunix \- the default system
87: .br
88: /dev/kmem \- the default memory
89: .SH "SEE ALSO"
90: gprof(1),
91: config(8)
92: .SH DIAGNOSTICS
93: Users with only read permission on /dev/kmem cannot change the state
94: of profiling collection.
95: They can get a
96: .I gmon.out
97: file with the warning that the data may be
98: inconsistent if profiling is in progress.
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